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JPL Small-Body Database Browser
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441538 (2008 SA308)
Classification: Main-belt Asteroid          SPK-ID: 2441538
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2171892589249972 5.744e-08  
a 2.381720328023466 2.0772e-08 au
q 1.864436255013449 1.284e-07 au
i 3.064234014131769 6.1457e-06 deg
node 163.9151053454108 8.2207e-05 deg
peri 173.9092175362286 8.47e-05 deg
M 348.348921433116 1.5916e-05 deg
tp 2458643.950842532325
(2019-Jun-09.45084253)
5.9503e-05 TDB
period 1342.562683947337
3.68
1.7564e-05
4.809e-08
d
yr
n .2681439044183364 3.5079e-09 deg/d
Q 2.899004401033484 2.5284e-08 au
  Orbit Determination Parameters
   # obs. used (total)      142  
   data-arc span      8025 days (21.97 yr)  
   first obs. used      1997-11-08  
   last obs. used      2019-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48523  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 15:57:33  

Additional Information
 Earth MOID = .854421 au 
 Jupiter MOID = 2.48978 au 
 T_jup = 3.504 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457528.5 (2016-May-20.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2185768037087281 5.7435e-08  
q 1.860730343138698 1.2856e-07 au
tp 2457301.646848662456
(2015-Oct-06.14684866)
5.6523e-05 TDB
node 163.9578104260012 8.213e-05 deg
peri 173.9403069941502 8.4577e-05 deg
i 3.065610377335323 6.1507e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      142  
   data-arc span      8025 days (21.97 yr)  
   first obs. used      1997-11-08  
   last obs. used      2019-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48523  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 15:57:33  

Additional Information
 Jupiter MOID = 2.48978 au 
 T_jup = 3.504 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.298802152113837E-15 -7.344002216350394E-15 -5.537359439142764E-13 -2.366053696795565E-14 -1.167244064716923E-13 -4.941065877881802E-15
q -7.344002216350394E-15 1.652847171232735E-14 1.285560653043686E-12 5.631488636873701E-14 2.857190600316778E-13 1.101808373576872E-14
tp -5.537359439142764E-13 1.285560653043686E-12 3.194834785340535E-9 4.682437277843523E-11 1.148998924562566E-9 1.109929272245586E-12
node -2.366053696795565E-14 5.631488636873701E-14 4.682437277843523E-11 6.745268685402526E-9 -6.717850348477426E-9 -8.960339809563776E-11
peri -1.167244064716923E-13 2.857190600316778E-13 1.148998924562566E-9 -6.717850348477426E-9 7.153250797985428E-9 8.982718657252052E-11
i -4.941065877881802E-15 1.101808373576872E-14 1.109929272245586E-12 -8.960339809563776E-11 8.982718657252052E-11 3.783097012448828E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.7   n/a MPO446751  

441538 (2008 SA308)          Discovered 2008-Sep-29 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-09-02
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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